Liquid dispensing apparatus



May 7, 1940. w. M. CARROLL LIQUID DIPENSING APPARATUS 12 Sheets-Sheet 1 Filed Jan. 31, 1936 w. M. CARROLL 2,199,480" LIQUID DISPENSING APPARATUS May 7, 1940.

Filed Jan. 31, 1936 IZ SheetS-Sheet 2 J n: W

May 7, 1940. w. M. CARROLL v LIQUID DISPENSI'NG APPARATUS FiledJan. .31. 1936 12 Sheets-Sheet 3 GRLJOTRMZER NEY' TOTHLIZ'ER May 7,, 1940. w. M. CA-RROLL 7 2,199,480 I LIQUID DISPENSING APPARATUS Filed Jan. 31, 1936 12 sheets sheet 4 May7, 1940. w. M. CARROLL LIQUID DISPENSING APPARATUS 12 Sheets-Sheet 5 Filed Jan. :51, 1936 w. M. CARROLL 2,199,480 I LIQUID DISPENSING APPARATUS I Filed Jan. 31, 1936 -l2 Sheets-Sheet 6' I, I P;

May 7, 1940. w. M. CARROLL LIQUID DISPENSING APPARATUS l2 Sheets-Sheet 7 Filed Jan. 31. 1936 omm m .m m mnm- NAM. a a Mr illfll mm E a $7 31 o wm 3% mm I no mow ,l. r. 1 m o MSW m8 mm 8 .QNW Q9. MW dm. @E m E v E QUW May 7, 1940.

W. M. CARROLL LIQUID DISPENSING APPARATUS Filed Jan. 3a 1936 412 Sheets-Sheet 8 W. M. CARROLL LIQUID DISPENSING APPARATUS May 7, 1940.

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LIQUID DISPENSING APPARATUS Filed Jan. 31, 1936 12 Sheets-Sheet 10 W. M. CARROLL LIQUID DISPENSING APPARATUS May 7, 1940" 12 Sheets-Sheet 11 Filed Jan. 31,, 1936 v Zr////////A May 7, 1940.

w. M. CARROLL LIQUID DISPENSING APPARATUS 12 Sheets-Sheet 12 Filed Jan.; 31, 193s Patented May 7 1940 REISSUED I UNITED STATES PATENT OFFICE Application January :1, mo, sea-arm. cum

1'! Claims.

means to indicate the total cost based upon a price per gallon unit cost, said price being computed by a quart register, to provide means for indicating the cost of the gallons dispensed based upon a unit price per gallon, the price being calculated upon the corresponding price per quart and the liquid being dispensed in quart increments, the dispensing, computing and indicating 50 being selectively terminable atany desired quart after dispensing has begun.

Yet another object of my invention is-to provide a computing pump which may be preconditioned by a desired manual operation after dispensing has been initiated, which will automatically cause the dispensing to stop irrespective of the closing of the nomle valve when a predetermined definite number of quarts have been dispensed and the total cost of the quarts at a predetermined price per quart thus dispensed will be computed and indicated.

'Yet another object of my invention is to provide a register and computing mechanism which is adapted to compute cost based on quart dispensing regardless of whether the unit price upon which the computation is made is in cents and tenths of a cent per gallon or in cents and fourths of a cent per gallon. 1

Yet another-object of my invention isto pro- 49 vide a register particularly adaptedto compute in quart increments the total cost based on unit price of either tenths 'or fourths of -a cent per gallon.

Yet another object of this invention is to provide a price indicating mechanism wherein the price per gallon may be changed by a single manual adjustment which will automatically compel the computing mechanism to compute the value of the 59 price change. I

Yet another object of my invention resides in providing a mechanism wherein the computing mechanism is rendered inoperative, preferably locked. during the time the price change is bem Me. 7

gasolinedispensedinthe dj m.

Yet another object of my invention resides in providing a resetting mechanismfor the clock or computing mechanism wherein the function of placing the dispensing nozzle on its stationary support, and maintaining it thereon conditions a prime mover, preferably the pump motor, for subsequently automatically resetting the computing mechanism upon the initiation of a subsequent dispensing operation and whereby this automatic power operated resetting is accomplished at the initial operation of the pump motor and before the operator has time to start the flow of gasoline through the dispensing line.

Yet another object of my invention resides in providing in a specific construction of resetting as accomplished by a hose reel construction type of pump wherein the initial outward movement of the hose from the hose reel will cause the automatic operation of thepump motor which primarily will effect resetting prior to the sufiicient withdrawal of the hose and the nozzle from its reel, as would be accomplished in ordinary dispensing.

Yet another object of my invention is to provide a hose reel control which upon the initial-25 extension of the hose starts the dispensing motor and effects resetting prior to the time the nomle assumes its operative position with respect ,to the tank to be filled and the operator has time to open the nozzle.

Yet another object of my invention is to provide a register mechanism, the various orders of which are based upon different increments of movement.

These andother objects of my invention wiil be apparent from a permal of the. following specification when taken in connection with the following drawings.

.Referring now to the'drawings in detail:

Fig. 1 shows a front elevational view of a pmnp, preferably a gasoline pump, provided with one form of my improv d price-calciflator. the lower portion of the housing being shown broken away in detail.

Fig.2isasideelevationalview ofapumpwith the lower portion broken away.

Fig.3isaperspectiveviewofthehosereel control in in with the meter valve and the reset mechanism.

Pig.4isa-vlewoftliecomputlngclockand calculatorassembly.-thesamebeingasideelevatlon.

Fig.5isanoppositesldeelevationofthe clockandcalculatora-embly.

l lg. liisa'aecticnalvlewtahenonlinet-4ll of Fig. 5 of the calculator and clock assembly.

Fig. 7 is an expanded diagrammatic perspective viewv of the price calculating mechanism.

Fig. 8 is an expanded detail view of the transfer gearing.

Fig. 9 is a diagrammatic perspective view of the motor and meter driving mechanism.

Fig. 10 is a sectional view of the rotor clutch.

Fig. 11 is a'section taken on line ll--ll of 8. 9.

Fig. 12 is a. view showing the gearing for operation'of totalssale dials.

Fig. 13 is a sectional detail view of one of the total sale dials being taken on line ll-II oi Fig. 14.

Fig. 14 is a sectional view of the total sales dial taken on line l4ll of I'ig. l3.

Fig. 15 is a sectional view taken on line iS-ii ofj'lg. 6 showing a portionof the reset mecha- Fig. 16isachangedpontlonofthepartsas shown in Fig.- .15.

Fig. 17 is'a sectional view taken on line iI-ll of Fig. 6 showing a portion of the resetting mech- I'ig. 18isa changedposition of thepartsshown in Hg. 17. 7

1538.19, 20, 21, 22, 23, 24, and 26 are detail figures showing the operation of the'price calculating mechanism.-

Fig.27 isasectionalviewtaken onlineII-Il of Fig. 24. V e

Figs. 28, 29, 30, 31 and 32 are views showing the modifying price calculating mechanism.

In my improved form of computing pump I have preferred to show thecomputing. pump in conjunction with a drum or reel type of dispenser disclosed in my pending application, Serial No. 22,287, filed May 20,1935. It is. however. distinctly understood that this is merely illustrative and that my computing pumpmay be utilized with any conventional type of dispenser of the present day use, and particularly with the present type of dispenser wherein the liquid is pumped through a flow-line which includes a' meter, and wherein the meter terminates in a flexible hose provided with a valve control noszle, and wherein the noale assembly when not inuseissupportedonahookorothersnnport on the outside of the housing, which hook has an associated mechanism'for controlling the motor pump and also for locking the motor pump and the nozzle valve in inoperative position when not in use.

In the illustrated embodiment of my invention I have shown a housing providing an upstanding casing 2, housing a portion of the. liquid flow line 4 which at its lower end is adapted for connection with a source of liquid. in this illustrated embodiment, as in my prior application above mentioned, the lower portion of the hous-v ing is designed to enclose a hose reel 0, a pump I, a motor II for driving the pump shaft I! by means of a belt connection Id. The upper portion of the liquid iiow line 4 is provided with a cmtrol valve It operable as hereinafter set forth.

This valve governs the flow of the liquid from the flow line 4' into the meter l8, which is preferably of the liquid displacement type and is of any desired construction. I prefer, however, to use the present type of Bowser meter now on the market.

The meter discharge is provided in the form of a. pipe 2'! which connects to the central portions 22 of the hose reel C, all as illustrated and claimed in my prior application Serial No. @387.

aforesaid. From the central connecting pipe 22 the liquid will flow through the flexible hose 2 coiled on the reel, and thence out through a discharge nozzle 28 provided with a control valve 2! having a manually operable valve control lever 3|. Inasmuch as the details of the hose reel and its manner of operation are described and claimed in my prior application, no further reference will bemadeexoeptastothoupartswhichitwilibe necessary to describe for an understanding of the present invention.

In the present instance, the belt H from the motor ll tothepumppulleyonthepumpshaft I: also operates to drive a smaller pulley 32 carrying the gear 34, which in turn meshes with another gear II on a flexible shaft :0, so that when the pump is operated this flexible shaft 38 will be Aswitch box 40 is provided in conjunction with themotor ll andashiftableswitchmechanism 42 includes a rod 44 operably connected by means of a lever 40 to the valve control shaft 41 andan additional lever 48 is operably connected to latchingmechanism ",whichinturnisoperated bythehosereeltinthegeneralmannerset forth in my prior application Serial No. 22,287, aforesaid.

The upper portion of the housing, and preferably above the meter ll, provides room for my improved price computing mechanism including oppositely disposed clock faces I! and I3. Each of these clock faces is provided with a series ofnumbersrangingfrom0to19anddisposed substantially concentrically about a pair of including a small gallon-indicating hand [4 and a larger indicating hand It. The sm'all hand will move one-twentieth (1/20) of a complete revolution in indicating a gallon and the large hand will make a complete revolution on the indication of a single gallon. Therefore, the largehand in a movement from Oto 1.will indicate 1/20 of a gallon. In addition. each dial I2 and I8 isprovided withthreeopenings disposed preferably just over the sero figure on the dial andthree'additional openingsius abovetheiigureloonthedial. 'nieupperserie'softhree openingsisarrangedtoindicatethecostofsale andtheloweropeningsarearrangedtoindicate the price per gallon.

Furthermore, by reference to Fig. 2, the upper side of the housing 2 is provided withan opening 88 which is provided with a slidableclosure ",whichmaybemanuallyopenedtodiaplaya gallontotaliserfl andamoneyorpricetotaliser N. 'lhi's door ll also gives accessio thepricesetting control knob, and also a knob 08 for locking the price-setting mechanism so that the latter cannot be changed during computing and In addition, the housing encloses a rack ll, preferably operated from the door I2, which controls the placing of the nozzle 28 on its stationary support, as preferably shown in my prior application Serial No. 22,287. The rack Ilisadaptedtoactuateagearllfixedtoa reset shaft It, as will be hereinafter set forth. The resetting mechanism ofmy present inventioninsomeparticularsdiiiersfromthatshown in my prior application Serial No. 22,287, and such improvements will be claimed in this present application.

The meter II is provided with an extension meter shaft ll provided with a detachableextension ll, driving a'bevel gear .2 meshing with another bevel gear 04 on a shaft .8 (see Fig. 9). Theilexibleshaft fl.showninldg.i.terminates ate another spiral gear fixed on a sleeve 00 and s l rotatable on the shaft I02, see Fig. 9.

The invention of this computing mechanism u embodiescertain principles disclosed in my prior application, Serial No. 9,760, flied March 7, 1935, but differs therefrom in generic and specific objects of invention and constructional features and operation whereby greatly improved computing functions are secured.

Referring now to Fig. 9, it will be understood that the pump driven shaft 00 is driven at all times that the pump is in operation. It. is also understood that the meter extension shaft 00 is driven only when the meter is in operation, in short, when dispensing is taking place. Sleeve 06 is connected to a cup-shaped clutch housing 00. Within this clutch housing is disposed a clutch member I00, which-is keyed to a shaft I02 as by,

a key I00. As shown clearly. in Fig. 10, the clutch member I00 is provided with three radially extending equi-distantly spaced arms I00, forming therebetween three angularly shaped pockets I00, H0 and H2. One wall of' each of these pockets comprises a face Ill, the other wall of each pocket comprises the face IIO, which is disposed at slightly more than-a right angle to the face I. The face II6 is considerably longer than face Ill. In the face ill of each pocket is provided a recess "'IIII inwhich is located a coil spring I22 disposed withineach pocket. The springs I20 constantly force the rollers into contact with the circular inner wall of the clutch housing 00 and against the oppositely inclining wall face 'I I6 of the pocket. These rollers are each carried on roller shafts I20, mounted upon the face of a gear I26, which is connected to-one end of a sleeve I20 carrying on its opposite end a small gear I00 meshing with a larger gear I22, loosely mounted on the cross shaft 86. Mounted on the shaft I02 are three radially disposed arms I00, I00 and I00, the same being rigidly fastened thereto by pins or other devices. Each of these arms carries a roller I00 thereupon. These arms are spaced apart angularly on the shaft I02, 120 degrees apart. In addition, the shaft I02 carries a gear I02 nxed thereto, meshing with another gear I,

to drive the gallon-totalizer'shaft I00, hereinafter referred .to. This shaft I00 operates in the well-known manner, the gallon-totaliser 02. In

addition. the shaft in is provided with two cams I00 and I00 each being adapted to actuate pins I02,- I 00 (see Fig. 5) as hereinafter more fully set forth. The shaft I02 which revolves once for each quart or other unit in addition is provided with a notched disc I00, having a Y notch I00 intojwhich cooperateswith ch -index nnger I00. As shown in Fig. 3, this index finger comprises-an angle lever pivoted at I02 on a stationary support I00 and is operated by means of a rod I00, having an adjmtable connection I00 with a lever I10, which lever, is mounted on the valve control 01 upon which the lever 00 is also rigidly mounted; the lever at 00 being shown in Fig. 1 and-also in Fig. 3. This lever 00 is oper-' ated to cause the opening of the control valve I0 and is ,actuated'by means of the hose reel on a starting movement, and is also actuated by the spring I! of the control valve when the Bylphon I10 operates the unlatching mechanism I'll to permit the'spring Iltourgetheval've lltoclosed position, all as set forth in my prior application SerialNmflBB'l. -l.

I20 which normally presses againstrollers the imperforate portion of the disc I 56 and .is'

ready to fall into the notch I08 when the notch registers with index finger I60, so that the Sylphon may be operated just ahead of the one quart unit and when the quart has been dispensed the notch I06 will register and the index finger I60 will then move under the urge of the spring I! to permit the valve I6 to close entirely, thereby ceasing the dispensing operation at exactly one quart unit. During-this same time the complete units have been computed and, in-

dicated on the computing mechanism of the clock.

Referring now again to Fig. 9, the gear I32 is frictionally driven by the meter shaft 00 through' spiral gears 02 and 00 and a friction disc "'6, which is pressed by means of spring I16 against the side face of the gear I32, ,the other face of the gear I02 presses against the stationary portion of frame I00. Gear I02 will drive gear I30 to drive sleeve I20 which in turn will drive gear I26 which in turn will drive the rollers I22 in a planetary movement. Simultaneously therewith the pump shaft will drive the cup-shaped housing 98. A differential of movement between the member I20 which carries the rollers I 22 and the cupshaped housing 00 will serve to carry the rollers into wedging engagement between the faces H6 and the inner circular'surface of the cup-shaped housing 00, whereby to cause movement of the member I00, which member being keyed by means of; key I to the shaft I02, drives the shaft I02 at this differential speed wherebyto revolve the computeractuating arms I00, I06 and I30.

In addition, the shaft 00 is provided with a gear I02 which drives-gear I00 loosely mounted on shaft I00 but which drives said shaft by means of a well known friction. "clutch mechanism.

Shaft I00, at its outer ends is. provided with the fast indicating clock hand 06. In addition, the shaft I06 is provided with a stub tooth gear I00 fast thereto, which drives a full tooth gear I90,

which in turn carries a sleeve I02 having at its opposite end another gear I00. This gear I00 meshes with gear I00 mounted on a sleeve I which has fixed to it at its oppodte end a slowing moving hand 00. It will be understood that this drive, shown-in is duplicated at the Opposite side of the clock mechanism.

- Referring now to the computing mechanism shown in Fig. 7 which is an expanded perspective view of the associated parts and alsoto Figs. 19 to27,-inclusive, it will be understood that this computing mechanism comprises three sets of counterassemblies, each similar to one another but not identical with each other. These three counter assemblies 200, 202 and 200, see Fig.2; are arranged on the shaft 222 and co-operate with each other to compute the price of the amount of liquid flowing through the meter and also having necessarymechanism for setting the pricepergallomandmechanismforreturning them to'an initialposition after the operation,.w will be. referred to later.

1b ed another small gear 224 meshing witha larger Referring now to the construction and operation of the counter assembly and transfer mechanism it will be understood that each set of counter wheels 222, 222 and 224 are driven by their respective arms I24, I22 and I22, moimted on shaft [22. Each of these arms I24, I22 and I22 are adapted to co-operate with an actuator arm 222, 222' and 222"to operate-colmtersllllll and 224, respectively. The arms I24, I22 and I22 ota'l pin 224 on-which is pivotally mounted a pawl 222 under tension of a spring 222, so as'to normally pull the pawl toward a ratchet gear'222, rotatably mounted on shaft 222. Pawl222 is held out of engagement with the ratchet teeth 222 by means of. a locking" pawl 222 pi'vota'lly. mounted on a pin 224 on the actuator 222. The locking pawl 222 is provided with a shoulder 222, adapted to engage a notch 222 on the hub-of the pawl 222 so that whenso engaged. as 'shownin Fig. 20, the pawl 222 will be held in position but when 'releasedthe pawl 22'. under tension of the spring 222, will engage-the rachetteeth 222. In addition, the locking pawl 222 is provided with an ear 242 adapted to be actuated by means of lobes-2'42 on lobe discs 242.242 and 242". These lobes 242 are spaced e'qui-distantly around the periphery of the discs 242,242 and 242". There are five of these lobes spaced '12 d crees apart on the disc 242 and 1011210! these lobes spaced 22 degrees apart 242' and 242". Due tothe 18011211322118 rollers I42 onarm 124 (see Fig. 24) engage the: actuator am 222 only '12 degrees of its 380v degrees of travel, five lobes are'n on the lobe disc 242 spaced'12 degrees apart. The rollers on, the other two arms, I22 and 122 (see Fig. 12), engage the actuator arms 222 only- 90d of their 360 degrees of travehfour lobes are only necessary on the lobe discs 242' and 242".

These lobes242 are set in position to correspond to theprice per .gallon.. This isaccomplished by means of a prim-setting knob 22 which upon turning rotates shaft 222, '1, which in turn turns the sprocket 222 to move'the chain- 222, which in turn engages the sprocket)".

mounted on the shaft 222.

This shaft has pinned to it agear 222 (see Fig. 7) engaging a largeg'ear 224. and this large gear is fastened to a five tooth Geneva:gear222 (see Fig. 27) which is fastened to'a sleeve 222 by means of a pin 212. This sleeve 222 is provided with a tongue and groove detachable'cluteh connection 212 and the flange ofthis sleeve 214,

- which carries a pin 212. whereby it' isoriginally mounted to a lobe-carrying disc 242. The gear 222 is adapted to mesh with'asm'alleompletely toothed gear 222mounted on a sleeve 222 (see Fig. '1) On the other end of the sleeve is mountgear 222, which forms a part of another group of gears of the same construction. as shown in .27. neferringagainnowtol'imt-andparticiuu- I arouse ly to gear 222, which is connectedto a four tooth as gear 224 is connected to itslobe disc 242 and Just as gear 222 is connected to its lobe disc 246', so also gear 222 is connected to its lobe disc 246" and thus through the turning of knob 22 and the hereinbefore described chain of interconnections, when vknob 22 is turned the various .lobe discs 242,242 and 242" are adjustably rotated and this adjustable rotation serves to position each-lobe disc with respect to the lug 242 on each locking pawl 222, whereby to determine the position and at what time the pawl 222 will be released from the position shown in Fig. to the position shown in Fig. 22 so that the pawl in its counter-clockwise movement will actuate the ratchet wheel 222. a

.On the same shaft 222 that is turned by the price-setting knob 22 there is a sprocket 222 over which runs a chain 224 which runs over two larger sprockets 222 and 222, and over a'tightening sprocket 222. sleeve 221 mounted on a shaft 212, which sleeve has fixed to it a dial 2 having on'its peripheral face figures 1 to 9, indicating tenths of a cent. Next to the'dial 214 is another dial 2i2 also carryingfiguresfromo to9,whichisthe centdial, and next to this is still another'dial 212 carrying figures from 0 to 9 which is theft) cent dial. These dials are duplicated upon the shaft 212 on the opposite side of the pump. The dials on the shaft 212 are viewable through windows 222, on one side of the machine and dials on shaft 212 are viewable through window222 on the other side of the machine. Through Geneva mechanism comprising the Geneva gear 222 driving the full gear 224, the second dial 212 is driven, and this in turn through another Geneva gear 222 driving the full gear 222 in turn drives the cent dial 212, whereby the price per gallon is set by turning control knob 22. The elements 222! and 222' are Geneva pinions which are driven by dials-2|4 and 212 respectively to operate the Geneva gears 222 and 222.

The means for indicating thecost of sale is shown clearly in Pigs. 1 and 5. By reference to these figures it will be seen that the upper portion of the dial of the clock face is supplied with three windows immediately below zero on the clock face. These windows 222 are duplicated at 242 on the opposite sides of the clock face.

Referring now to the computing mechanism, it will be noted that the ratchet as (see Fig. 2'1) is fastened to the 40'tooth gear 242 (see Figs. 24 and 27) by means of a pin 222, also fast to this gear is a five short tooth Geneva gear 222. This Geneva gear 222 engages a smaller short tooth gear 224 (see Fig. 26) onthe shaft 222 and the gear 224 in turn engages another gear 222 on the shaft 222, which gear engages gear 222.

Referring to Fig. 8, gear 222 has pivotally I mounted 'on its side a spring pressed pawl 224 which an internal ratchet 222 formed on the enlarged hub 222 of a sleeve 212 loosely mounted on a shaft 212; The other end of sleeve 212 carries rigidly therewith another gear 214 meshing with a. gear 212 in the second bank 222. The gear 212 is connected with a four short tooth Geneva gear 212 in the same manner as gear 242 is connected to gear 222 hereinbefore described in connection with the first bank of actuators.

The sprocket 222 is fast to a- Geneva gear 318 in turn operatively meshes with gear 318 which is similar in construction with gear 362 in the first bank except that it has .20 short teeth. Thus, gear 318 drives through a spring pressed pawl like that as shown in Fig. 8 and an internal ratchet to drive the enlarged hub 380 on sleeve 382. The opposite end of sleeve 382 carries rigidly a gear 384 meshing with gear 386 in a third bank 204, which gear 386 corresponds in construction to gear 316 and gear 348. Gear 386, therefore, acquires the total accumulation of the first two banks and also accumulates the amount registered on the third bank, due to the movement of ratchet 238", which operates in the same manner as ratchet 230 of the first bank and ratchet 230' of the second bank. The total accumulation of, the three banks is carried forward on gear 380 which is secured to the accumulation gear 386. By reference to Fig. 12 it will be seen that gear 380 connects with two parallelly arranged train of gears for driving two sets of price indicators disposed on opposite clock faces. For instance, the gear 380 drives a smaller gear 382 fixed on shaft 384, the opposite end of which carries gear 386 driving a larger gear 388 on a shaft 400 which in turn drives a small gear 402 on a sleeve 404 mounted on the dial shaft 406.

By reference to Figs. 13 and 14, rotation of the sleeve 404 has connected at its opposite end a gear 408 carrying a spring pressed pawl 4 I8 engaging a ratchet wheel M2. The ratchet M2 is fixed to the side wall 4 of a dial assemby 4L5. ratchet H2 and side wall 4 are fixed to a sleeve 4I6, loosely mounted on the shaft 406, which sleeve in turn has attached thereto and adapted to rotate therewith a one cent dial 4I8, having on its-peripheral face figures indicating 1 cent to 9 cents. From the side wall 4 I 8 of the dial 8 there are two teeth 420 which teeth engage a Geneva gear 422 loosely mounted on shaft 424. Attached to this Geneva gear and rotating with it is a full tooth gear 426 which en gages a larger gear 428 of the 10, 'cent dial assembly. This dial assembly 430 is driven in the same manner as the preceding dial assembly and has figures on its peripheral face to indicate 10 cents to 90 cents, and in like manner the third dial assembly 432 is driven by a Geneva mechanism 434 controlled by the struck-out teeth 438 on the side of the dial 430. This last dial has figures on its peripheral face which indicate $1.00 to $9.00.

The dial .432 is shown as carrying on its side punched out tooth 442 which is not used in the present instance but the construction is shown since ,it facilitates the, manufacture of interchangeable dials, because each dial assembly is a self-contained unit.

'In a similar manner, the gear 380 drives a; gear 443 meshing with a smaller gear 444 on a sleeve 446 which isslmilar to sleeve 404 herein described, and which in turn drives the opposite bank of price indicating dials 448, 450 and 452.

In addition, the gear 388 drives a smaller gear 454on a shaft 456 which has fastened thereto a spiral gear 458 driving another gear 450 which in turn operates a price totaliaer 64, shown, in Fig. 4, as projected through a window. 1

By reference to Figs. 5, 6 and 8, it will be noted two-cams I48 and I50 are carried on shaft I02 engaging pins I52 and I54, respectively. The pin I52 is mounted on an arm 462 and pin I54 is Each one of these arms This.

arm just at the rear of its slot carries a laterally extending pin, which pin is adapted to extend in the oppositely arranged slot of the other arm. The two cams I48 and I50 lie between the two oppositely extending pins I52 and I54. The pins being guided. in the respective slots of the opposite arms in this way when the cams rotate, the

cams will press the pins outwardly, the pins sliding laterally and horizontally in the slots. Inasmuch as each pin is connected to an arm, the rotation of the cams will simultaneously move the oppositely extending arms back and forth. The outer end of each arm carries a pin 464 and 466, respectively. Pin 466 isfastened on a crank arm 410 pivotally mounted on dial shaft 406. On the end of the crank arm 410 is a shutter 412 which is adapted in it's arcuate reciprocation to cover and uncover the window 346. There are three of these shutters on the crank 410 to correspond to the three windows 346. In a similar manner the other shutter on the opposite side of the dial covers and uncovers the window 340. Thus in the operation of this device every time there is a shift in the indicating dial the shutter is automatically operated to cover the window so that the change is not viewable. The arms 462 and 464 have connected to them at the pins 466 and 468,. springs. 414 and 416 connected'to the main frame I80 by a pin 415 which are for returning the arms to their inward position.

Reverting now to the driving mechanism and the calculating mechanism, and summarizing the operation, it will be seen that my improved computer clock is operated by the power of the motor I0 transmitted through a reducing gear and the flexible drive shaft 38, the selected speed ofwhich is approximately 60R. P. M;

When the pawl assembly shown in Figures 19 will be seen by projecting one of the other lobes of the disc at various points 'in the path of travel of the pawl assembly the lobe will trip the pawl 226 into engagement with the ratchet 230, causing the latter to be advanced an adjustably variable number of predetermined spaces. The pawl is resorted to disengaged position by a stop plate 238 which is held rigidly by being mounted on shaft -I02. The pawls have fiat surfaces 24I which are engaged by co-operating stop plates 238 when the arms are returned to positionby the spring 243. The springs are strong enough to cause surfaces 24I and plates 238 to withdraw the pawls from engagement with the ratchets against the action of springs 228 and place the pawls under control of the latches 232.

As the actuator 220 moves counter-clockwise it has at its opposite end a locking catch in the form of a shoulder 418 adapted to engage a shoulder 480 on a pivoted lever 482 whereby as the actuator revolves in a counter-clockwise direction it will be held in the position shown in Fig. 21 by the shoulder 480 engaging the catch 416 on the actuator 220. It is held in this position until .the

arm I34 which is rotating in a clockwise direction strikes a lug 484 on the lever 482'to disreturned to its initial position, as shown in Fig. 19. l

The speed ofshafts 38 and 80 is selected electively and-not by way of limitation. The meter shaft 80 operates one revolution per gallon. As long as there is no flow of liquid through the v meter the rollers I22 will remain stationary even though the motor is in operation and is driving the cylindrical housing 88. Whenliquid fiows through the meter rotation movement will be imparted to the rollers to bring the clutch rolls into engagement with the cam shaped pockets, whereby to rotate the shaft I02. The ratio between the gears and I32 is such that the clutch disc 98 will be. rotated at 4 revolutions per gallon or the equivalent of one revolution per quart. Rotation of this clutch disc will cause the shaft III! to be rotated by clutch member I00 in a 4 to l clutch ratio with the meter. The

shaft I02 having the 3 radially disposed arms I34, I36 and Ill thereon rotates in such a way as tocausethesearmstobealternatelyandcontinuously driven through a definite arc of travel once for each quart of liquid passing through the meter. The actuator arms of each set or bank are loosely mounted on the shaft 222 and after being actuated by the arms I, I" and I" are returned to position by their springs Ill. As hereinbefore described. movement of each actuator moves its corresponding pawl 22., which pawls are adapted to co-operate with the ratchets 230, 230 and 230" and fastened to the actuator 22! is another pawl 232 disposed to co-operate with radially. Projecting lobes 242 of the pricedetermining disc 2, 246' and 240".

value of both the 4th and 5th place decimals and this counter gear has 8 spaces instead of 10 and the gear is advanced 2 spacu for .00025, 4 spaces for .0005 and 6 spaces for .00075. In some localities g line is sold in V and 74 cent prices per gallon. By reducing these gallon prices to price per quart it will be noted that the result comes out in 6 decimal places and the combined 4th, 5th and 6th place is in V; fractional sub-multiple division of the 3rd digit place. For example, the quart value of 12 cents per gallon is. .03625, the last 3 decimals being of the 3rd place decimal whole number. Thus to accumulate value on the M4 the first or 8 spaced counter wheel would be advanced 5 spaces, nothing would be recorded on the 10 cent counter wheel but the cent counter wheel which is a 10 division wheel, will be advanced 3 spaces. The first place decimal of the quarts value is always ll so only 3 counter wheels are n to accumulate these values by addition of said value for each quart dispensed. Of the three accumulating counter wheels or gears used, the

first (8 division) takes care of everything below the 3rd decimal place. The second wheel 10 division) takescare of the third decimal place and the --3rd counter wheel (10 division) takes care of the 2nd decimal place which is full cents.

Gal. Qt. on. Qt. on. Qt. on. or. ea; or. on. Qt. on. Qt. on. Qt.

120 .000 .040 m0 .000 240 .000 000 .010 020 .000 000 1 -.00020 1 .04020 1 .00000 1 .0005 1 .01000 1 .00000 1 2 .0000 2 .0400 2 .0000 1 2 .0000 2 .0100 2 .0000 2 a .00010 a .04010 0 .00010 a .00010 0 .01010 0 .00010 0 4 .001 4 .041 4 .001 4 .001 4 .011 4 .001 4 0 .00120 0 .04120 0 .00120 0 .00120 0 .01120 0 .00120 0 0 .0010 0 .0410 0 .0010 0 .0010 0 .0100 0- .0010 0 1 .00110 1 .04110 1 .00110 1 .00110 1 .01110- -1' .00110 1 0 .002 0 ..042 0 .002 0 .002 0 .011 0 .002 a 0 .0023 0 .04220 0 .00220 0 .00420 0 .01200 0 .00220 0 100 .0020 .0420 210 .0010 200 .0000 200 000 .0020 r10 1 .00020 1 .04020 1 .00000 1 .00020 1 .01000 1 .00020 1 .00020 2 .0000 2 .0400 2 .0000 2 .0000 2 .0100 2 .0000 2 .0000 0 .00010 2 .04010 a .00010 0 .00010 0 .01010 0 .00010 0 .00010 4 .000 4 .040 v 4 .000 4 .000 4 .010 4 .000 4 .000 0 .00020 0 ,.o4020 0 .00020 0 .00000 0 .01020 0 -.00020 Q 0 .00020 0 .0000 0 .0400 0 .0000 0 .0000 0 .0100 0 .0000 0 .0000 1 .00010 1 .04010 1. .00010 1 .00010 1 .01010 1 .00010 1 .00010 0 .001 0 .041 0 .001- s .001 0 .011 0 .001 0 .001 0 .00120 0 .04120 0 .00120 0 .00120 0 .01120 0 .00100 0 .001: 100 .0010 100 .0410 200 .0010 010 .0010 010 .0110 000 .0010 000 .0010

1 1 .04110 1 .00110 1 .00110 1 .01110 1 .00110 1 .00110 0 .000 2 .040 2 .000 2 .000 2 .010 0 .000 4 2 .000 a .00020 0 .04020 a .00020 0 .00020 0 .01020 0 .00000 0 .00020 4 .0000 4 .0400 4 .0000 4 .0000 4 .0100 4 .0000 4 .0000 0 .00010 0 .04010 0 .00010 0 .00010 0' .01010 0 .00010 0 .00010 0 .000 0 -.040 0 .000 0 .000 0 .010 0 .000 0 .000 1 .00000 1 .04000 1 .00020 1 .00010 1 .01020 1 .00020 1 a .00000 0 .0000 0 .0400 0 .0000 0 .0000 0 .0100 0 .0000 0 .0000 0 .00010 0 .04010 0 .00010 0 .00010 0 .01010 0 .00010 0 .00010 The accompanying chart shows prices per gal- Referring to the drawings, it will be noted that lon from 12 cents to 40 cents by A of a cent the ratchet fllh'as 40 teeth and is secured to the and the corresponding value in quarts. Referside of gear I, which also has 40 teeth. The ring to the quart prices it will be noted that the actuator 22. in the first bank is rotated by its 4th and 5th decimal places combine to make up co-operating arm I through an arc of travel items which are V fractional divisions of the 3rd place digits. That is, the 4th and 5th places progress by repeating the figures 00, 25, 50 and 75 and then carry one into the 3rd decimal place. In order to meet this condition I have provided one counter gear I, Figure I, to accumulate the of 12 degrees or the equivalent of 8 spacesof ratchet Ill and gear 204, shown in .Mand- 25. lnthesecondl'mdthirdbankstheactuator arms Ill and .22." are rotated through an are and gears 6'16 and' 666, respectively. The pricedetermining disc 246 in the first bank 266 has 5 radially projecting lobe spaces '12 degrees apart and the price-determining discs in the other two discs have 4 radially projecting lobe spaces 90 degrees apart. As hereinbefore stated, the shaft 266 is extended to the outside and is connected by means of chain gear to adjustable pricechanging knob 66 by which the shaft is manually rotated in order to change the price. The shaft 266 has secured thereto the gear 262 which meshes with the full 40 tooth gear 264 in the first bank, the ratios between the gears 262 and 264 and between the sprockets 662 and 666 are such that when the right-hand price-indicating wheel 614 is rotated by the knob 66 one space, the pricedetermining lobe disc 246 in the first bank will be so positioned as to cause the pawl 226 to advance the ratchet teeth 266 a distance of two spaces even with the value .0025. Two spaces on the right-hand price-indicating wheel 614 would cause 4 spaces to be advanced on ratchet 266 or the value .005, 3 spaces on the right-hand priceindicating wheel .614 would cause 6 spaces to be advanced on ratchet 266' or the value .0075 the next time the value .0075 would change to .001.

The transfergear 266.which rotates with gear 264 would at that time engage gear 266 on the sleeve 262 having at its other end gear 264 which engages the *40-tooth' price gear 266 and pricedeterrnining disc 246' in the second bank to be advanced one space, and so on. The result is that when any desired price per gallon is indicated on dial 614 by turning knob 66 the corresponding price per quart is already set up in the register. The locking pawls466 co-operate with the price gears 264 (see Fig. 19) and insure the accurate positioning 0! the price-determining lobe disc 246. A shaft.466 having a collarwith a flat side 462 is provided to lock the pawls 466 after any desired price change has beenmade. Movement of this shaft 466 is preferably under lock and key. However, I prefer to provide a knob or handle 66, Figures 6 and 18, mounted on an arm 466 pivoted on the shaft 466, this knob or handle 66 being accessible through the opening 66 when the door 66 has been opened, as hashereinbefore been described. The knob 66 is fastened to a. plunger 466which has a spring 666 adapted to keep the enlarged head of the plunger 466 in register with a hole in the frame 166. It wilLbe seen, therefore, that rotation of the shaft 466 can only be accomplished by pulling out the plunger from the registering opening in the frame and revolving the arm 466 to a down. position, as indicated in dotted line in Fig. 4, which will allow the flat portion of the collar 462 on shaft 466 to become adjacent to the locking lever 466 whereby the gears 264 will be released for rotation. In order to prevent the plunger 466 from being retracted and shift- ,ing of the am 466 to the unlocked position, I

provide an enlarged perforated head on the plunger 466 adapted to receive a seal 662 passed through the perforation in the end of the plunger .so that it cannot be retracted unless the seal is broken. This locking or sealing means is so desired so that a change of'price per gallon cannot be accomplished without breaking the seal.

The counter wheel assembly in each bank comprises a lobe carrying disc 246, 246' and 246",

. a full gear 646, 616 and 666, and a transfer gear 662 and 616. The transfer gear in the first bank transfers every 8th space, while the other two banks transfer every 10 spaces. The transfer from the 10th to cent is arranged to occur when of a cent has been accumulated. The counter transfer gear 662 co-operates with gear 664, loosely mounted on the shaft. 666, which engages another gear 666 loosely mounted on a shaft 666 which engages another gear 662. Gear 662 drives a gear 614 through the ratchet and pawl clutch assembly, as shown in Fig. 8. The gear 614 meshes with full gear 616 in the second bank and thus the transfer is imparted. This transfer is duplicated by the 2d and 3rd banks. The cost of sale is indicated on the 'price dials and these dials have a capacity of $9.99 and will start from 0 upon a subsequent dispensing operation to compute the number of gallons delivered and the price thereof.

In the thirdbank, Figure "l, the transfer is imparted to gear 666 which is fixed to operate the gear 666. By referring to Figure 12, it will be seen that the gear 666 operates, through the various gear trains there disclosed, the cost indicating dials 416 and 446 which in turn operate the second and third order indicating dials through above described transfer mechanisms.

When a dispensing operation has been completed and the computing mechanism has registered on the clock face the amount of liquid dispensed and the total sale price of the complete amount, it is desirable and necessary to condition or reset and return the various mechanisms such as the total sale dials, clock hands and their respective operating members to their zero and initial positions, respectively, before another dispensing operation takes place. This resetting is accomplished automatically by the power of the pump motor driving or operating certain resetting mechanism which has been pre-conditioned by the completion of the previous dispensing operation.

Referring now to the drawings and :in particular to Figs. 3, 4 and 5, it will be understood that at the end of the dispensing operation the control nozzle 26 is returned to its pocket in the side of the housing 2 and in order that the nozzle 26 will remain on its angularly disposed rest the door or closure must be lowered at least a certain distance in order to prevent the nozzle from sliding from its rest. This required distance is sufficient to cause the rack 16, which is attached to the upper part of the door, to revolve the gear 14 fixed to the reset shaft 16, see Fig. 3. Mounted on the reset shaft 16 is a radiallyextending arm 662' keyed to the shaft by pin 664-. This arm 662 carries a pivoted pawl 666 adapted to engage a notched disc 666. This pawl 666, Figure 16, is urged against the periphery of the disc 666 by a spring 616 mounted on. the radial arm 662. Upon,

rotation of the reset shaft 16 in a clockwise direction, see Fig. 15, the pawl 666 will engage one of two notches 616 and 612 on the periphery of the disc 666. Disc 666 is fast to a gear 614 by means of pins 616. The gear 614 in turn drives an idler gear 616 which is mounted on a stub shaft 626 journalled-in the clock frame 166. This idler gear 616 in turn drives the gear 126 which car ries the rollers 122. Rotation ofthis gear with-- its clutching connection with the clutch member 166 through the rollers 122 causes the shaft 162 that carries the arms 164, 166 and 166 to be rotated to their starting or initial position. This initial or starting position of these arms which has to be'accurate and coincide with the other starting positions of the co-operating mechanisms, is determined by the adjustment of a stop pin 50! mounted on the frame llll, see Figs.

and 16. This stop pin is so located that it will further rotation. This movement through the.

gearing described hereinbefore'is sufiicient to reposition the arms I, III and Ill inaccurate relative alinement with the actuating arms III, 220' and 220", rwpectively.

The position the notches ill on the disc Ill are in is due to the termination of the previous dispensingoperation. The disc has two notches 180 degrees apart. The pawl ll! travels only 180 degrees, therefore, it will always engage one of the notches during its rotation. Upon the reverse rotation of the reset shaft 1!, due to the opening of the'door 12, the pawl I will return to its starting operation position, as shown in Fig. 15, andthe end portion III on the pawl will engage the stop pin II! and hold it out of engagement with the periphery of the'disc "I until another resetting operation occurs.

The rotation of the reset shaft, due to the closing of the door II, also conditions a resetting roller clutch assembly mounted on the shaft 200. This resetting roller clutch assembly is' constructed similar to the power roller clutch assembly on the shaft III (see Fig. 1'1) having similar rollers I24 disposed in angular pockets 528 of a clutch member I, the clutch being keyed to the sleeve III. A roller carrying disc 52!, which carries the rollers I24, has on its periphery a notch l2! and is adapted to engage an extending arm III, which is part of a lever 32 mounted and keyed to the shaft 5" (see Fig. 17). This lever 32 has a radially extendim face I which engages a cam '38 mounted and keyed to the reset shaft 16. tion of the reset shaft It, will rotate the lever in and disengage the arm I from the notch 52! on the roller-clutch disc 22. By releasing this arm 530 from the notch 52'', the springs 540 in the roller clutch-will tend to rotate the clutching member 542 and the roller disc If! slightly in a counterclockwise direction so-that the extendinga'rm it. of the lever I32 cannot engage the-shoulder 520. This arm I12 under the tension of a spring 5 tends toengage the notch or the surface of the disc I except when the cam 53! on the reset shaft 'llcams' it out of engagement. This releasing of the roller clutch takes place when the door I! is lowered after the dispensing has taken place and the hose nozzle is has been returned to its pockets in the side of the frame or housing 2.

When another dispensing operation is desired, the hose 2| is pulled out to revolve the hose reel and to start the pump motor through the mechanism previously described. The starting of the pump motor it revolves the spiral gears 02 and 84. The gear 04 is connected to the sleeve 0 which has on its other end the gear 90, which in turn meshes with the idler gear 5 on the shaft 122. attached to the cup-shaped disc I of the roller clutch assembly, the roller clutch bly being free to revolve due to the fact that the arm "I has been disengaged from the notch .tfl upon completion of the previous dispensing operation. The rotation-of the clutch assembly III will roill and the cup-shaped housing m, which will This cam II. upon rota- This gear 5 en a es another gear- I- tate the gear "I which is attached to the roller carrying disc 822. This gear 550 rotates another gear 2 fixed to the shaft I which has keyed thereto a spiral gear Ill, see Fig. 9. This spiral gear 6, engages another spiral gear 5 on a 5 shaft Ill. This shaft "I is parallel with the shaft "land has attached or fixed to it a pawl carrying disc Ill. The pawl I62 pivotally mounte ed on the disc I is adapted to engage a notch 5 on a sleeve 5 which has at its other end a gear I. This gear in turn meshes with another gear on the clock hand operating shaft I". This shaft I has on its outer end the fast moving hand I which will be rotated towards zero position by the rotation of the shaft Ill. Shaft III is enabled to turn without moving the meter shaft by reason of the friction clutch connection between shaft Ill and the gear I.

Referringagaintotheshaft "Lithasonits outer end a spline or notch Ill adapted to operate a pawl lli, pivotally attached to the side of the gear III. This gear II. is attached to the sleeve III, hereinbefore described, having on its opposite end the gear I, which in turn engages the 5 gear I to rotate the slow'moving hand 84 on the sleeve I. vIt will be understood upon rotation of the shaft I" the slow and fast moving handswill be automatically returned to their sero position on the clock face.

when the clock hands have reached their zero position on the clock dial, the notch I28 again willbe'engagedbythearmfllwhichwillrelease the driving clutch connections between the rollers continue to rotate while the pump erated.

Referring now to the resetting of the calculating mechanism, which is also operated by the power ofthe pump motor, I have provided the sear m which is attached to.the side of the roller-carrying disc '22, see Fig. '1, which carries a sleeve ill having at its opposite end another gear lll. with the gear I8! is a larger gear I loosely mounted on shaft 122, whichinturndrivesagearmiixedtotheshaft I'll. This shaft has on' its surface a series of splines or notches U. see Fig. 8, adapted to engage or co -operate with the spring pressed pawls ill. These pawls and spring assemblies are looselymountedincut-outspacesinthebodv portion of a series of gears I, "I and i, which are mounted on the shaft "2. Upon rot tion of the shaft I'll by the gear I82 and I described, and the power of the pump motor III, the notches I" will rotate the gears "I, I02 and I through their respective pawl connections to revolve the resetting gears I, II. and I, loosely mounted on the sleeves "I, but drivingly connected to their respective ra'tchets- 2, 230' and 23l"-and Geneva gears. In this manner thismechanism is set'to its initial or starting position before another dispensing operation takes place.

Attheflnishofadispensingoperationthetotal price dials us, an and en, viewable through v the window or opening I on one side of the pump and the dials I, l and "I, viewable through the windows 3 on the other side of thepumphavetoberesetorsetaheadtothe three sero positions. This resetting is accomplished simultaneously with the resetting of the motor 18 Opmotor m. Referring tol'igs. 7 and 1am" 

